Anti-freezing water meter

Abstract

The utility model discloses an anti-freezing water meter which comprises a water meter shell and a cover body, the cover body is arranged on the water meter shell, and the anti-freezing water meter is characterized in that a partition seat is arranged in the water meter shell in a vertically movable mode, a liquid cavity is formed between the partition seat and the water meter shell, and an installation cavity used for installing a metering device is formed between the partition seat and the cover body. A sealing structure is arranged between the blocking base and the water meter shell, an upper limiting mechanism and a lower limiting mechanism are arranged on the water meter shell, the blocking base is arranged between the upper limiting mechanism and the lower limiting mechanism, and an elastic supporting mechanism is arranged between the upper limiting mechanism and the blocking base. The water meter shell has the advantages of being simple in structure and capable of effectively preventing the water meter shell from being broken and guaranteeing that the water meter performance can reach the international standard after the air temperature recovers.

Description

Technical Field

[0001] The utility model relates to a water meter, in particular to an antifreeze water meter. Background Art

[0002] A water meter is an instrument used to measure water flow, mostly the cumulative flow of water, and is usually divided into two categories: volumetric water meters and velocity water meters. Water meters are mostly exposed and installed outdoors. When encountering low temperatures, if the corresponding insulation and antifreeze measures are not taken, the water meter is prone to freezing and cracking. Based on this, antifreeze water meters came into being. At present, the common antifreeze water meters on the market generally adopt antifreeze measures to add sponge-like soft objects to the bottom of the cavity of the water meter shell. The purpose is to increase the freezing space of the cavity when it freezes. However, in actual use, we found that due to the good performance of metal in conducting temperature, when the freezing temperature is reached, the added sponge soft object is in direct contact with the shell and has already frozen itself, and it cannot or cannot really play an antifreeze effect, and in fact does not increase the frozen volume of the cavity. Moreover, after the temperature of this type of water meter rises and the freezing is lifted, some parts inside the water meter will be damaged, and many of them are difficult to meet the performance requirements of the national standard, resulting in the direct scrapping of the entire water meter. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an antifreeze water meter with simple structure and good antifreeze performance.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A freeze-proof water meter comprises a water meter housing and a cover body, wherein the cover body is sealingly mounted on the water meter housing, a baffle seat is movably arranged in the water meter housing, a liquid cavity is formed between the baffle seat and the water meter housing located below it, an installation cavity for installing a metering device is formed between the baffle seat, the water meter housing located above it and the cover body, a sealing structure is arranged between the outer wall of the baffle seat and the inner wall of the water meter housing, so that the liquid cavity and the installation cavity form two independent chambers that do not interfere with each other, an upper limit mechanism for limiting the upward movable position of the baffle seat and a lower limit mechanism for limiting the downward movable position of the baffle seat are arranged on the water meter housing, the baffle seat is arranged between the upper limit mechanism and the lower limit mechanism, and an elastic support mechanism is arranged between the upper limit mechanism and the baffle seat.

[0006] The sealing structure is an O-type sealing ring arranged between the outer side wall of the baffle seat and the inner side wall of the water meter housing.

[0007] An annular sealing groove is recessed on the outer wall of the baffle seat, the O-ring is embedded in the annular sealing groove, the inner wall of the O-ring is in close contact with the annular sealing groove, and the outer wall of the O-ring is in close contact with the inner wall of the water meter housing.

[0008] The upper limit mechanism is an annular limit block fixedly arranged in the water meter housing, and the elastic support mechanism is arranged between the annular limit block and the baffle seat.

[0009] The elastic supporting mechanism is a spring, the upper end of the spring abuts against the lower side of the upper limit mechanism, and the lower end of the spring abuts against the baffle seat.

[0010] There are at least two springs, and the at least two springs are evenly distributed.

[0011] A positioning recess is recessed downwardly on the baffle seat corresponding to the installation position of the spring, and the lower end of the spring extends into the corresponding positioning recess.

[0012] The lower limit mechanism is an annular liner installed in the water meter housing.

[0013] An annular shelf wall is protruded and arranged on the installation position of the annular liner in the water meter housing, and the annular liner is installed on the shelf wall.

[0014] An impeller assembly is installed in the liquid cavity.

[0015] The water meter housing has a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively arranged at the left and right ends of the water meter housing and are connected with the liquid cavity.

[0016] Compared with the prior art, the advantages of the utility model are: simple structure, through the cooperation of the baffle seat and the sealing structure, the liquid cavity and the installation cavity form two independent chambers that do not affect each other, the baffle seat cooperates with the elastic support mechanism, and the volume of the liquid cavity is adjustable without changing the overall volume. When the temperature is too low, the water in the liquid cavity freezes and the volume increases, pushing the baffle seat to move upward, so that the volume of the liquid cavity increases, thereby effectively preventing the water meter shell from rupturing. At this time, the elastic support mechanism is in a state of being compressed by force, and when the temperature rises and the ice melts, the ice turns into water and the volume decreases. The elastic support mechanism is reset, and the baffle seat is brought down to its initial position. The whole process does not cause any impact on the metering device installed in the installation cavity, and the water meter performance can also be guaranteed to meet international standards after the temperature recovers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the partition block seat of the utility model;

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure with the cover removed. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] As shown in the figure, an antifreeze water meter includes a water meter housing 1 and a cover body 2, the cover body 2 is sealed and installed on the water meter housing 1, a baffle seat 3 is movably arranged in the water meter housing 1, a liquid cavity 13 is formed between the baffle seat 3 and the water meter housing 1 located below it, and an installation cavity 23 for installing a metering device (not shown in the figure) is formed between the baffle seat 3 and the water meter housing 1 and the cover body 2 located above it, a sealing structure 4 is arranged between the outer wall of the baffle seat 3 and the inner wall of the water meter housing 1, so that the liquid cavity 13 and the installation cavity 23 form two independent chambers that do not interfere with each other, an upper limit mechanism 5 for limiting the upward movable position of the baffle seat 3 and a lower limit mechanism 6 for limiting the downward movable position of the baffle seat 3 are arranged on the water meter housing 1, the baffle seat 3 is arranged between the upper limit mechanism 5 and the lower limit mechanism 6, and an elastic support mechanism 7 is arranged between the upper limit mechanism 5 and the baffle seat 3.

[0022] Specifically, the sealing structure 4 is an O-type sealing ring arranged between the outer wall of the baffle seat 3 and the inner wall of the water meter housing 1. The structure is simple and the cost is low.

[0023] Specifically, an annular sealing groove 31 is recessed on the outer wall of the baffle seat 3, and an O-type sealing ring is embedded in the annular sealing groove 31. The inner wall of the O-type sealing ring is in close contact with the annular sealing groove 31, and the outer wall of the O-type sealing ring is in close contact with the inner wall of the water meter housing 1. The O-type sealing ring is stable and secure, so as to play an effective sealing role.

[0024] Specifically, the upper limit mechanism 5 is an annular limit block fixedly arranged in the water meter housing 1, and an elastic support mechanism 7 is arranged between the annular limit block and the baffle seat 3. The structure is simple, and the annular limit block can be installed in the water meter housing 1 by threaded connection, which is easy to install.

[0025] Specifically, the elastic support mechanism 7 is a spring, the upper end of the spring abuts against the lower part of the upper limit mechanism 5, and the lower end of the spring abuts against the baffle seat 3. The structure is simple, the cost is low, and the use is stable. Generally, a spring with an elastic coefficient capable of bearing 10-32KG is selected.

[0026] Specifically, there are at least two springs, and the at least two springs are evenly distributed to achieve uniform force distribution and load bearing.

[0027] Specifically, a positioning recess 32 is recessed downwardly on the barrier seat 3 corresponding to the installation position of the spring, and the lower end of the spring is inserted into the corresponding positioning recess 32. It is ensured that the spring can be stably installed in a predetermined position, thereby playing a stable elastic support role and avoiding connection failure.

[0028] Specifically, the lower limit mechanism 6 is an annular liner installed in the water meter housing 1. It has a simple structure and a stable function.

[0029] Specifically, an annular support wall 11 is protruded at the installation position of the annular liner in the water meter housing 1, and the annular liner is supported and installed on the support wall 11. The annular liner is stably installed in the water meter housing 1.

[0030] Specifically, an impeller assembly 8 is installed in the liquid chamber 13 .

[0031] Specifically, the water meter housing 1 has a water inlet pipe 12 and a water outlet pipe 14 . The water inlet pipe 12 and the water outlet pipe 14 are respectively arranged at the left and right ends of the water meter housing 1 and are connected to the liquid cavity 13 .

[0032] The working principle is: when the temperature is too low and reaches the freezing temperature, the water in the liquid cavity 13 expands after freezing, pushing the baffle seat 3 to move upward, so that the volume of the liquid cavity 13 becomes larger, thereby effectively preventing the water meter housing from breaking. At this time, the spring is in a state of being stressed and compressed, and when the temperature rises and the ice melts, the ice turns into water and the volume decreases. The spring resets and brings the baffle seat 3 downward to its initial position. Since the upward movement of the baffle seat 3 is limited by the annular limit block, and the annular limit block is installed on the water meter housing 1, the upward movement of the baffle seat 3 will not cause any extrusion effect on the metering device installed in the installation cavity, and the water meter performance can also be guaranteed to meet international standards after the temperature recovers.

Claims

1. An antifreeze water meter, comprising a water meter housing and a cover, wherein the cover is sealed and mounted on the water meter housing, characterized in that A baffle seat is movably arranged in the water meter housing, a liquid cavity is formed between the baffle seat and the water meter housing located below it, an installation cavity for installing a metering device is formed between the baffle seat, the water meter housing located above it and the cover body, a sealing structure is arranged between the outer wall of the baffle seat and the inner wall of the water meter housing, so that the liquid cavity and the installation cavity form two independent chambers that do not interfere with each other, an upper limit mechanism for limiting the upward movable position of the baffle seat and a lower limit mechanism for limiting the downward movable position of the baffle seat are arranged on the water meter housing, the baffle seat is arranged between the upper limit mechanism and the lower limit mechanism, and an elastic support mechanism is arranged between the upper limit mechanism and the baffle seat.

2. An antifreeze water meter as claimed in claim 1, characterized in that The sealing structure is an O-type sealing ring arranged between the outer side wall of the baffle seat and the inner side wall of the water meter housing.

3. An antifreeze water meter as claimed in claim 2, characterized in that An annular sealing groove is recessed on the outer wall of the baffle seat, the O-ring is embedded in the annular sealing groove, the inner wall of the O-ring is in close contact with the annular sealing groove, and the outer wall of the O-ring is in close contact with the inner wall of the water meter housing.

4. An antifreeze water meter as claimed in claim 1, characterized in that The upper limit mechanism is an annular limit block fixedly arranged in the water meter housing, and the elastic support mechanism is arranged between the annular limit block and the baffle seat.

5. An antifreeze water meter as claimed in claim 1 or 4, characterized in that The elastic supporting mechanism is a spring, the upper end of the spring abuts against the lower side of the upper limit mechanism, and the lower end of the spring abuts against the baffle seat.

6. An antifreeze water meter as claimed in claim 5, characterized in that A positioning recess is recessed downwardly on the baffle seat corresponding to the installation position of the spring, and the lower end of the spring extends into the corresponding positioning recess.

7. An antifreeze water meter as claimed in claim 1, characterized in that The lower limit mechanism is an annular liner installed in the water meter housing.

8. An antifreeze water meter as claimed in claim 7, characterized in that An annular shelf wall is protruded and arranged on the installation position of the annular liner in the water meter housing, and the annular liner is installed on the shelf wall.

9. An antifreeze water meter as claimed in claim 1, characterized in that An impeller assembly is installed in the liquid cavity.

10. An antifreeze water meter as claimed in claim 1, characterized in that The water meter housing has a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively arranged at the left and right ends of the water meter housing and are connected with the liquid cavity.

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